Biological and physico-chemical processes in excrements of soil animals
Identifieur interne : 004B37 ( Main/Exploration ); précédent : 004B36; suivant : 004B38Biological and physico-chemical processes in excrements of soil animals
Auteurs : A. Martin [France] ; J. C. Y. Marinissen [Pays-Bas]Source :
- Geoderma [ 0016-7061 ] ; 1993.
Abstract
Soil animals, especially saprophagous species, ingest large amounts of organic and/or mineral materials. The undigested material is voided as excrements, which are physical structures with specific microenvironmental conditions that may dramatically influence the biological and physico-chemical processes as compared to those occurring in the initial material. In this paper, we emphasize firstly some critical constraints that have to be taken into account in studies of processes in soil fauna excrements, such as (i) the diversity in composition, size and stability of excrements, (ii) the difficulty in sampling excrements in field studies, and/or (iii) the difficulty in defining a relevant reference material for comparative approaches, and (iv) a relevant time-scale for dynamic studies. A review of recent literature enlightens some specific aspects of biological processes in soil fauna excrements, e.g., the composition of the microbial community, microbial activity, decomposition and nutrient release in addition to specific physico-chemical conditions, e.g., aggregation, clay/organic matter interactions and fluid movements. This synthesis emphasizes the close relationship between physical and biological processes that need to be investigated through interactive approaches.
Url:
DOI: 10.1016/0016-7061(93)90121-Z
Affiliations:
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Martin</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire d'Ecologie, Ecole Normale Supérieure, 46 rue d'Ulm, 75230 Paris cedex 05</wicri:regionArea><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Paris</settlement></placeName></affiliation></author><author><name sortKey="Marinissen, J C Y" sort="Marinissen, J C Y" uniqKey="Marinissen J" first="J. C. Y." last="Marinissen">J. C. Y. Marinissen</name><affiliation wicri:level="1"><country xml:lang="fr">Pays-Bas</country><wicri:regionArea>Department of Soil Science and Geology, Agricultural University, PO Box 37, 6700 AA Wageningen</wicri:regionArea><wicri:noRegion>6700 AA Wageningen</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Geoderma</title><title level="j" type="abbrev">GEODER</title><idno type="ISSN">0016-7061</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1993">1993</date><biblScope unit="volume">56</biblScope><biblScope unit="issue">1–4</biblScope><biblScope unit="page" from="331">331</biblScope><biblScope unit="page" to="347">347</biblScope></imprint><idno type="ISSN">0016-7061</idno></series><idno type="istex">CD007ABBC45F740986B50D14A6E62441C50D77A6</idno><idno type="DOI">10.1016/0016-7061(93)90121-Z</idno><idno type="PII">0016-7061(93)90121-Z</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0016-7061</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Soil animals, especially saprophagous species, ingest large amounts of organic and/or mineral materials. The undigested material is voided as excrements, which are physical structures with specific microenvironmental conditions that may dramatically influence the biological and physico-chemical processes as compared to those occurring in the initial material. In this paper, we emphasize firstly some critical constraints that have to be taken into account in studies of processes in soil fauna excrements, such as (i) the diversity in composition, size and stability of excrements, (ii) the difficulty in sampling excrements in field studies, and/or (iii) the difficulty in defining a relevant reference material for comparative approaches, and (iv) a relevant time-scale for dynamic studies. A review of recent literature enlightens some specific aspects of biological processes in soil fauna excrements, e.g., the composition of the microbial community, microbial activity, decomposition and nutrient release in addition to specific physico-chemical conditions, e.g., aggregation, clay/organic matter interactions and fluid movements. This synthesis emphasizes the close relationship between physical and biological processes that need to be investigated through interactive approaches.</div></front></TEI><affiliations><list><country><li>France</li><li>Pays-Bas</li></country><region><li>Île-de-France</li></region><settlement><li>Paris</li></settlement></list><tree><country name="France"><region name="Île-de-France"><name sortKey="Martin, A" sort="Martin, A" uniqKey="Martin A" first="A." last="Martin">A. Martin</name></region></country><country name="Pays-Bas"><noRegion><name sortKey="Marinissen, J C Y" sort="Marinissen, J C Y" uniqKey="Marinissen J" first="J. C. Y." last="Marinissen">J. C. Y. Marinissen</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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